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Dataset Card for Electricity Transformer Temperature
Dataset Summary
The electric power distribution problem is the distribution of electricity to different areas depending on its sequential usage. But predicting the future demand of a specific area is difficult, as it varies with weekdays, holidays, seasons, weather, temperatures, etc. However, no existing method can perform a long-term prediction based on super long-term real-world data with high precision. Any false predictions may damage the electrical transformer. So currently, without an efficient method to predict future electric usage, managers have to make decisions based on the empirical number, which is much higher than the real-world demands. It causes unnecessary waste of electric and equipment depreciation. On the other hand, the oil temperatures can reflect the condition of the Transformer. One of the most efficient strategies is to predict how the electrical transformers' oil temperature is safe and avoid unnecessary waste. As a result, to address this problem, the authors and Beijing Guowang Fuda Science & Technology Development Company have provided 2-years worth of data.
Specifically, the dataset combines short-term periodical patterns, long-term periodical patterns, long-term trends, and many irregular patterns. The dataset are obtained from 2 Electricity Transformers at 2 stations and come in an 1H
(hourly) or 15T
(15-minute) frequency containing 2 year * 365 days * 24 hours * (4 for 15T) times = 17,520 (70,080 for 15T) data points.
The target time series is the Oil Temperature and the dataset comes with the following 6 covariates in the univariate setup:
- High UseFul Load
- High UseLess Load
- Middle UseFul Load
- Middle UseLess Load
- Low UseFul Load
- Low UseLess Load
Dataset Usage
To load a particular variant of the dataset just specify its name e.g:
load_dataset("ett", "m1", multivariate=False) # univariate 15-min frequency dataset from first transformer
or to specify a prediction length:
load_dataset("ett", "h2", prediction_length=48) # multivariate dataset from second transformer with prediction length of 48 (hours)
Supported Tasks and Leaderboards
The time series data is split into train/val/test set of 12/4/4 months respectively. Given the prediction length (default: 1 day (24 hours or 24*4 15T)) we create rolling windows of this size for the val/test sets.
time-series-forecasting
univariate-time-series-forecasting
The univariate time series forecasting tasks involves learning the future one dimensional target
values of a time series in a dataset for some prediction_length
time steps. The performance of the forecast models can then be validated via the ground truth in the validation
split and tested via the test
split. The covriates are stored in the feat_dynamic_real
key of each time series.
multivariate-time-series-forecasting
The multivariate time series forecasting task involves learning the future vector of target
values of a time series in a dataset for some prediction_length
time steps. Similar to the univariate setting the performance of a multivariate model can be validated via the ground truth in the validation
split and tested via the test
split.
Languages
Dataset Structure
Data Instances
A sample from the training set is provided below:
{
'start': datetime.datetime(2012, 1, 1, 0, 0),
'target': [14.0, 18.0, 21.0, 20.0, 22.0, 20.0, ...],
'feat_static_cat': [0],
'feat_dynamic_real': [[0.3, 0.4], [0.1, 0.6], ...],
'item_id': 'OT'
}
Data Fields
For the univariate regular time series each series has the following keys:
start
: a datetime of the first entry of each time series in the datasettarget
: an array[float32] of the actual target valuesfeat_static_cat
: an array[uint64] which contains a categorical identifier of each time series in the datasetfeat_dynamic_real
: optional array of covariate featuresitem_id
: a string identifier of each time series in a dataset for reference
For the multivariate time series the target
is a vector of the multivariate dimension for each time point.
Data Splits
The time series data is split into train/val/test set of 12/4/4 months respectively.
Dataset Creation
Curation Rationale
Develop time series methods that can perform a long-term prediction based on super long-term real-world data with high precision.
Source Data
Initial Data Collection and Normalization
[More Information Needed]
Who are the source language producers?
[More Information Needed]
Annotations
Annotation process
[More Information Needed]
Who are the annotators?
[More Information Needed]
Personal and Sensitive Information
[More Information Needed]
Considerations for Using the Data
Social Impact of Dataset
[More Information Needed]
Discussion of Biases
[More Information Needed]
Other Known Limitations
[More Information Needed]
Additional Information
Dataset Curators
Licensing Information
Creative Commons Attribution 4.0 International
Citation Information
@inproceedings{haoyietal-informer-2021,
author = {Haoyi Zhou and
Shanghang Zhang and
Jieqi Peng and
Shuai Zhang and
Jianxin Li and
Hui Xiong and
Wancai Zhang},
title = {Informer: Beyond Efficient Transformer for Long Sequence Time-Series Forecasting},
booktitle = {The Thirty-Fifth {AAAI} Conference on Artificial Intelligence, {AAAI} 2021, Virtual Conference},
volume = {35},
number = {12},
pages = {11106--11115},
publisher = {{AAAI} Press},
year = {2021},
}
Contributions
Thanks to @kashif for adding this dataset.
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